package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
   /* @Override
    public PageResult pageQuery(String name, Integer page, Integer pageSize, Integer type) {
        //查询---分页查询
       PageHelper.startPage(page,pageSize);
        List<Category> list = categoryMapper.pageQuery(name,type);
        PageResult pageResult = new PageResult();
        pageResult.setTotal(list.size());
        pageResult.setRecords(list);
        return pageResult;

    }*/


    @Override
    public void updateCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.updateCategory(category);
    }

    //启用禁用

    @Override
    public void startOrStopStatus(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                .updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId())
                .build();
       // categoryMapper.startOrStopStatus(category);
        categoryMapper.updateCategory(category);
    }

    //增加分类
    @Override
    public void addCategory(CategoryDTO categoryDTO) {
        //属性拷贝
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        //补全信息
        category.setStatus(StatusConstant.DISABLE);
//        category.setCreateTime(LocalDateTime.now());
//        category.setUpdateTime(LocalDateTime.now());
//        category.setCreateUser(BaseContext.getCurrentId());
//        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.addCategory(category);
    }

    @Override
    public void deleteCategory(Long id) {
        //categoryMapper.deleteCategory(id);
        //todo  删除分类时，需要判断是否有关联的菜品或套餐，如果有关联的菜品或套餐，则不允许删除
//       int  count = categoryMapper.getCountByCategoryId(id);
//        System.out.println("当前的分类还有菜品："+count);
//        if(count > 0){
//            //当前分类下有菜品，不能删除
//            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
//        }
        Integer count = dishMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        //删除分类数据
        categoryMapper.deleteCategory(id);
    }

    @Override
    public List<Category> listByType(Integer type) {
       // categoryMapper.listByType(type);
       // List<Category> list = categoryMapper.listByType(type);
       // String name = null;
       // System.out.println("0000000000000000000000000000000000000000000000000000000000");
     //   List<Category> list = categoryMapper.pageQuery( name,type);//复用查询方法
        return categoryMapper.listByType(type);
        //return list;
    }

    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        //下一条sql进行分页，自动加入limit关键字分页
        Page<Category> page = (Page)categoryMapper.pageQuery(categoryPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());

    }
}
